initiator (n.)

• apprentice
• architect
• artificer
• artist
• author
• begetter
• beginner
• builder
• conceiver
• constructor
• craftsman
• creator
• designer
• deviser
• discoverer
• effector
• engineer
• executor
• executrix
• father
• founder
• generator
• grower
• industrialist
• instigator
• inventor
• journeyman
• maker
• manufacturer
• master
• mother
• organizer
• originator
• planner
• precursor
• producer
• raiser
• shaper
• sire
• smith
• wright